The Doctor and Gabby are still caught between two factions as modern humanity is born. Neanderthals and Cro Magnons clash, and their actions will shape the direction taken by humankind in the millennia to come! Plus: Cindy discovers an alarming secret back in NYC... and in deep space, Anubis grows impatient!

The gothic, sprawling Ravenscaur is the top private school in the UK, educator of the children of royalty, politicians and celebrities, and epicentre of generations of power and influence. When an old friend of Clara’s dies at the school under mysterious circumstances, she and the Doctor go undercover to investigate...